Backlight module assembly, structural adjustment method thereof and display device

ABSTRACT

The present disclosure provides a backlight module assembly, structural adjustment method thereof and display device. The backlight module assembly includes a plastic frame, a film and an adjustment sheet. The plastic frame is presented in a box shape with an opening on the top, and has side walls and a bottom wall, and a space enclosed by the side walls and the bottom wall being a mounting groove. The film is arranged on the bottom wall and received within the mounting groove. The adjustment sheet is arranged on an inner side of the side wall of the mounting groove.

TECHNICAL FIELD

The present disclosure relates to but not limits to a liquid crystaldisplay technique, particularly to a backlight module assembly, astructural adjustment method of the backlight module assembly and adisplay device.

BACKGROUND

It is greatly required for information display while the society isbeing informationalized. At present, the most popular displaying way onthe market is a liquid crystal display. The liquid crystal display mayrealize grayscale display by controlling liquid crystal rotation byusing electric field, and furthermore, may realize colorful display bymeans of a color film. The liquid crystal display has excellentperformances, such as thin, light weight and lower power consumption,thereby has been used in computers, TVs and mobile terminal displayers.

In order to realize a human-computer interaction function, atouch-screen emerges as the times require. The most widely usedtechnology currently is a transmission-type capacitive touch technology.The transmission-type capacitive touch technology includes G/G, whichuses two substrate glasses including one that may achieve a touch panelfunction and the other that may achieve a protection function; G/FF,which may embed the touch panel function into two polyester films andmay be protected by the glass substrates; OGS (One Glass Solution),which is one-piece touch way; Oncell, which may embed the touch screenbetween a color filter substrate and a polarizer; Incell, which mayembed the touch panel function into a liquid crystal pixel, etc. In aprocess of the product development, a film structure (involving theparameters, such as length, width and height of the film) and a matinggap (including a distance between the film and the side walls of theplastic frame, and a distance between the film and the display unit)often need to be adjusted to meet the final product requirements. In thepast, both the film structure and the mating gap refer to a structuraladjustment for the plastic frame, need to perform mold requiring, andeven mold re-opening of the plastic frame, which will undoubtedlyincrease the product development cycle and cost.

For the liquid crystal display devices of the same type and size (suchas 11.6-inch or 13.3-inch, etc.), appearance of some liquid crystaldisplay devices may be shared. Size of the film, thickness of thedisplay unit, a gap between the display unit and the film, and a gapbetween the film and the side walls of the plastic frame which need toperform mold repairing and even mold re-opening to cause theverification and size guide time longer, need to be adjusted in order tomeet the thickness and optical parameters (to meet temperature andhumidity verification requirements) of the newly developed backlightmodule assembly, and edges of the display unit are also prone to brightedges (bright areas) and edge shadows (dark areas) and other issues.

The Background portion contains the contents which are merely used forreinforcing understanding of the background technology of the presentdisclosure, and thus may include information that does not constitutethe prior art as already known by an ordinary person skilled in the art.

SUMMARY

To solve at least one of the above problems, the present disclosureprovides a backlight module assembly to share the plastic frame, to savecosts and schedules for mold-repairing and mold re-opening of theplastic frame, to facilitate for quick verification and adjustment ofthe backlight module assembly, so as to achieve a purpose of low costand quick development of the products.

To achieve the purpose of the present disclosure, the present disclosureprovides a backlight module assembly, which includes a plastic frame, afilm and a adjustment sheet. The plastic frame is presented in a boxshape with an opening on the top, and has side walls and a bottom wall,and a space enclosed by the side walls and the bottom wall being amounting groove. The film is arranged on the bottom wall and receivedwithin the mounting groove. The adjustment sheet is arranged on an innerside of the side wall of the mounting groove.

Optionally, the adjustment sheet includes a vertical part and ahorizontal part, a first set distance is provided between the verticalpart and the film, and a second set distance is provided between anouter end face of the horizontal part and the film.

Optionally, a limiting slot is provided in the inner side on a top ofthe side wall of the mounting groove, and the horizontal part is fit inthe limiting slot.

Optionally, the plastic frame is rectangular and has four side walls,there are three adjustment sheets which are correspondingly arranged onthe three side walls of the plastic frame, and the adjustment sheetlocated in the middle abuts against the adjustment sheets located on theboth sides.

Optionally, the plastic frame is an unitary structure.

Optionally, the adjustment sheet has absorbance areas with differentabsorbance.

The present disclosure further provides a display device, which includesthe backlight module assembly according to any one of the aboveembodiments and a display unit which is arranged on a top end face ofthe adjustment sheet.

The present disclosure further provides a structural adjustment methodfor a backlight module assembly. The backlight module assembly includesan plastic frame, which is presented in a box shape with an opening onits top, having side walls and a bottom wall, and a space enclosed bythe side walls and the bottom wall being a mounting groove; a film,which is arranged on the bottom wall and received within the mountinggroove; and a adjustment sheet, which is arranged on an inner side ofthe side wall of the mounting groove, the adjustment sheet including avertical part and a horizontal part, a first set distance being providedbetween the vertical part and the film, and a second set distance beingprovided between an outer end face of the horizontal part and the film,the structural adjustment method for the backlight module assembly isadaptive to size adjustment of the film, adjustment of the second setdistance, size adjustment of a display unit and/or adjustment of thefirst set distance by changing size of the adjustment sheet.

Optionally, adapting to thickness adjustment of the film, adjustment ofthe second set distance and/or thickness adjustment of the display unitby changing thickness of the horizontal part of the adjustment sheet;and adapting to length adjustment of the film, width adjustment of thefilm, adjustment of the first set distance, a length adjustment of thedisplay unit and/or width adjustment of the display unit by changingwidth of the vertical part of the adjustment sheet.

Optionally, bright areas and dark areas at an edge of the display unitare adjusted by changing absorbance of the absorbance areas on thevertical part of the adjustment sheet.

As compared with the prior art, the present disclosure provides abacklight module assembly. The adjustment sheet is mounted at the sidewall of the plastic frame. Adjustment for width of the adjustment sheetmay change size of the mounting groove to adapt to size variation of thefilm, so as to avoid repairing a mold or re-opening a mold to share theplastic frame, such that the backlight module assembly may realize arapid verification assembly and perform a fast temperature and humidityverification.

Optionally, it is adaptive to size adjustment of the film, adjustment ofthe second set distance and/or adjustment of the first set distance bychanging height or width of the adjustment sheet. The backlight moduleassembly is manufactured to be a display device to adapt to the sizeadjustment of the display unit by changing the height and width of theadjustment sheet, such that the size-changed backlight module assemblymay be quickly guided into assembling and realize the temperature andhumidity verification of the backlight module assembly. As forsize-approximate backlight module assemblies, adjustment for size of theadjustment sheet may share the plastic frame to some extent withoutmold-repairing and mold re-opening, to reduce produce development cycleand cost effectively.

According to bright and dark areas at edges of the display unit, colorsof the various absorbance areas of the adjustment sheet may be setcorrespondingly to increase absorption or reflection of light on thesides, to solve the problems of the bright and dark areas at the edgesof the display unit, such that the brightness at the edges is consistentwith the brightness at the center of the display unit.

Other features and advantages of the present disclosure will be setforth in detail in the following description and in part will becomeapparent or may be learned from practice of the present disclosure. Theobjects and other advantages of the present disclosure may be realizedand attained by the structure particularly pointed out in the writtendescription and claims hereof as well as the appended drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the disclosure and constitute a part of thisapplication, illustrate embodiment(s) of the disclosure and togetherwith the description serve to explain the technical solution of thedisclosure but not be construed as limiting to the technical solution ofthe present disclosure.

FIG. 1 is a sectional schematic view of a backlight module assemblyaccording to one embodiment of the present disclosure;

FIG. 2 is a top view of the backlight module assembly as shown in FIG.1;

FIG. 3 is a sectional schematic view of an plastic frame of thebacklight module assembly in FIG. 1;

FIG. 4 is a sectional schematic view of a display device according toanother embodiment of the present disclosure.

Wherein, 1. plastic frame; 11. mounting groove; 12. limiting slot; 2.film; 3. adjustment sheet; 31. vertical part; 32. horizontal part; 4.display unit.

DETAILED DESCRIPTION

Now, the exemplary embodiments will be described more fully withreference to the accompany drawings. However, the exemplary embodimentsmay be implemented in various forms and should not be construed aslimited to the embodiments set forth herein. Instead, these embodimentsare provided so that this disclosure will be thorough and complete, andthe concept of the exemplary embodiment will fully conveyed to thoseskilled in the art. Same reference signs denote the same or similarstructures in the accompany drawings, and thus the detailed descriptionthereof will be omitted.

In the following description, numerous specific details are set forth toprovide a sufficient understanding of the present disclosure. However,the present disclosure may also be embodied in other ways than thosedescribed herein, and the protection scope of the present disclosure istherefore not affected by the specific embodiments.

The backlight module assembly, the structural adjustment method and thedisplay device according to some embodiments of the present disclosureare described in conjunction with the accompanying drawings.

The present disclosure provides a backlight module assembly, as shown inFIG. 1, including an plastic frame 1, a film 2 and a adjustment sheet 3.

The plastic frame 1 is presented at a box shape, with an opening at itstop, and has side walls and a bottom wall. A space enclosed by the sidewalls and the bottom side is a mounting groove. As shown in FIG. 2, inthis embodiment, the plastic frame 1 is rectangular and has four sidewalls 13 and one bottom wall 14.

The film 2 is arranged on the bottom wall 14, and received in themounting groove 11.

The adjustment sheet 3 is located within the mounting groove 11 andarranged at the side walls of the mounting groove 11.

The adjustment sheet 3 is mounted at the side walls of the plastic frame1. Adjustment for width of the adjustment sheet 3 may change size of themounting groove 11 to adapt to size variation of the film 2, so as toavoid repairing a mold or re-opening a mold to share the plastic frame1, such that the backlight module assembly may realize a rapidverification assembly and perform a fast temperature and humidityverification.

Optionally, as shown in FIG. 1 and FIG. 4, the adjustment sheet 3includes vertical parts 3 and horizontal parts 32, wherein a first setdistance L1 is presented between the vertical part 31 and the film 2,and a second set distance L2 is presented between an outer end face ofthe horizontal part 32 and the film 2. As shown in FIG. 4, after adisplay unit 4 is mounted on the backlight module assembly, an edge ofthe display unit 4 abuts against the outer end face of the horizontalpart 32, and a distance between the display unit 4 and the film 2 is thesecond set distance L2.

The present disclosure provides a backlight module assembly, which mayadapt to size adjustment of the film 2, adjustment of the second setdistance L2 and/or adjustment of the first set distance L1 by changingheight or width of the adjustment sheet 3. The backlight module assemblyis manufactured to be a display device to adapt to the size adjustmentof the display unit 4 by changing the height and width of the adjustmentsheet 3, such that the size-changed backlight module assembly may bequickly guided into assembling and realize the temperature and humidityverification of the backlight module assembly. As for size-approximatebacklight module assemblies, adjustment for size of the adjustment sheet3 may share the plastic frame 1 to some extent without mold-repairingand opening a new mold, to reduce produce development cycle and costeffectively.

Optionally, as shown in FIG. 1 and FIG. 3, limiting slots 12 areprovided in the inner sides of the top of the three side walls 13 of theplastic frame 1, respectively. The vertical part 31 are located withinthe mounting groove 11, preferably, abuts against the bottom wall of themounting groove 11. The horizontal part 32 coincides with the limitingslot 12 in shape, fits into the limiting slot 12, preferably, abutsagainst the bottom wall of the limiting slot 12.

Of course, in the other embodiments, the adjustment sheet 3 also may bepresented in an elongated shape, also may achieve the object of thepresent application but not deviate from design concept of the presentdisclosure, will be omitted herein, all of which should be within thescope of the present application.

Particularly, as shown in FIG. 1 to FIG. 3, the plastic frame 1 isrectangular and has four side walls 13. The mounting groove 11 definedby four side walls 13 and one bottom wall is a rectangular slot. Thereare three adjustment sheets 3 and three limiting slots 12. The threeadjustment sheets 3 are correspondingly provided on the three of thefour side walls 13 of the plastic frame 1, which has three side walls ofthe limiting slot 12, and the adjustment sheet 3 in the middle abutsagainst the adjustment sheets 3 on both sides. A light source may bearranged on the side walls of the mounting groove 11 without providingthe adjustment sheets 3, and no limiting slot 13 are on the side wall13.

Optionally, the plastic frame 1 is a one-piece structure.

Optionally, there is an absorbance area with different absorbance on theadjustment sheet 3.

According to bright and dark areas at edges of the display unit 4,colors of the various absorbance areas of the adjustment sheet 3 may beset correspondingly to increase absorption or reflection of light on thesides, to solve the problems of the bright and dark areas at the edgesof the display unit 4, such that the brightness at the edges isconsistent with the brightness at the center of the display unit 4.

The present disclosure provides a display device, as shown in FIG. 4,including the backlight module assembly according to any one of theabove embodiments.

The display device according to the present disclosure has alladvantages of the backlight module assembly according to any one of theabove embodiments, herein omitted.

Optionally, as shown in FIG. 4, the display device further includes adisplay unit 4. The display unit 4 is located at an opening of themounting groove 11, and abuts against the outer end face of theadjustment sheet 3.

The display device according to the present disclosure may adapt to thesize adjustment of the display unit 4 by changing height or width of theadjustment sheet 3, under a circumstance of satisfying a request fortemperature and humidity of the backlight module assembly, thesize-changed backlight module assembly may be quickly guided intoassembling without mold-repairing and mole re-opening of the plasticframe, to reduce the produce development cycle and cost effectively.

A structural adjustment method of the backlight module assemblyaccording to the present disclosure (not shown) is adapted to the sizeadjustment of the film, the adjustment of the second set distance andthe size adjustment of the display unit and/or the adjustment of thefirst set distance by changing the size of the adjustment sheet.

Particularly, it is adapted to thickness adjustment of the film,adjustment of the second set distance, and/or thickness adjustment ofthe display unit by changing thickness of the horizontal parts of theadjustment sheet. It is adapted to length adjustment of the film, widthadjustment of the film, adjustment of the first set distance, lengthadjustment of the display unit, and/or width adjustment of the displayunit by changing width of the vertical parts of the adjustment sheet.

For example, when the whole thickness of the backlight module assembly(axis direction of the mounting groove), the thickness of the film orthe thickness of the display unit are need to be adjusted, it may berealized by adjusting the thickness of the horizontal parts of theadjustment sheet within design safety range of the second set distance.For example, the thickness of the existing backlight module assemblyneeds to be reduced by 0.03 mm, but the existing optical design hasalready satisfied for the requirement, it may be measured that the sizeof the second set distance may be reduced by 0.03 mm (the changed secondset distance may still meet the optical design requirements), that is,the optical design of the backlight module assembly structure has notbeen altered by reducing the thickness of the horizontal part of theadjustment sheet by 0.03 mm.

When the length or width of the film needs to be adjusted, it may berealized that the width of the vertical parts of the adjustment sheetmay be adjusted within the design safety range of the first setdistance. For example, the width F2 of the existing film is reduced by0.03 mm, it may be determined that the size of the existing first setdistance has already satisfy for the design, the optical design of thebacklight module assembly structure has not been altered by increasingthe width of the vertical parts of the corresponding adjustment sheet by0.03 mm.

As verifying the temperature and humidity, the first set distance andthe second set distance may be adjusted correspondingly by adjusting thethickness of the horizontal parts and the width of the vertical parts ofthe adjustment sheet, and the thickness of the horizontal parts and thewidth of the vertical parts of the adjustment sheet according to sizevariation of the film, in order to verify the optical design of thebacklight module assembly quickly.

Optionally, the bright and dark areas at the edges of the display unitmay be adjusted by changing absorbance of the absorbance areas on thevertical parts of the adjustment sheet, such that the brightness at theedge is consistent with the brightness at the center of the displayunit.

For example, the brightness at the edges of the display unit is toohigh, as a result, bright spots appear at the edges of a display screen,the areas of the vertical parts of the adjustment sheet corresponding tothe bright spots on the surface of the film are displayed in blankcolor, light absorption between the adjustment sheet at the bright spotand the edges of the display unit may be increased, light leakage may bereduced, and the edge brightness of the display unit may be reduced toovercome problem of bright edges.

In summary, the backlight module assembly according to the presentdisclosure, has the adjustment sheets mounted at the side walls of theplastic frame, and may change the size of the plastic frame by adjustingthe width of the adjustment sheet and adapt to the size variation of thefilm, to avoid mold repairing or mold re-opening of the plastic frame,so as to share the plastic frame, such that the backlight moduleassembly may realize quick verification and assembling, and perform afast verification for the temperature and humidity.

Furthermore, the backlight module assembly may adapt to size adjustmentof the film, adjustment of the second set distance and/or adjustment ofthe first set distance by changing height or width of the adjustmentsheet. The backlight module assembly is manufactured to be a displaydevice to adapt to the size adjustment of the display unit by changingthe height and width of the adjustment sheet, such that the size-changedbacklight module assembly may be quickly guided into assembling andrealize the temperature and humidity verification of the backlightmodule assembly. As for size-approximate backlight module assemblies,adjustment for size of the adjustment sheet may share the plastic frameto some extent without mold-repairing and mold re-opening, to reduceproduce development cycle and cost effectively.

According to bright and dark areas at edges of the display unit, colorsof the various absorbance areas of the adjustment sheet may be setcorrespondingly to increase absorption or reflection of light on thesides, to solve the problems of the bright and dark areas at the edgesof the display unit, such that the brightness at the edges is consistentwith the brightness at the center of the display unit.

In the description of the present disclosure, the terms “mount”,“connect”, “fix” and the like should be broadly understood. For example,“connect” may be a fixed connection, and also a removable connection oran integral connection, and may be a direct connection, and alsoindirect connection through an intermediary connection. For thoseskilled in the art, the specific meaning of the above terms in thepresent disclosure may be understood according to the specificsituations.

Any reference in this specification to “one embodiment” “someembodiments” and “specific example” etc., means that a particularfeature, structure, material or characteristic described in connectionwith the embodiment is included in at least one embodiment of theexample. The appearances of such phrases in various places in thespecification are not necessarily all referring to the same embodimentor example. Further, when a particular feature, structure, material orcharacteristic is described in connection with any one or moreembodiments or examples.

Although the invention has been described with reference to severalexemplary embodiments, it is understood that the words that have beenused are words of description and illustration, rather than words oflimitation. It should also be understood that the above-describedembodiments are not limited by any of the details of the foregoingdescription, without departing from the spirit or essentialcharacteristics of the present disclosure. However, the extent forpatent protection of the present disclosure still should be defined bythe appended claims.

1. A backlight module assembly, comprising: a plastic frame, presentedin a box shape with an opening on its top, having side walls and abottom wall, and wherein a space enclosed by the side walls and thebottom wall is a mounting groove; a film, arranged on the bottom walland received within the mounting groove; and an adjustment sheet,arranged on an inner side of the side wall of the mounting groove. 2.The backlight module assembly according to claim 1, wherein theadjustment sheet comprises a vertical part and a horizontal part, afirst set distance is provided between the vertical part and the film,and a second set distance is provided between an outer end face of thehorizontal part and the film.
 3. The backlight module assembly accordingto claim 2, wherein a limiting slot is provided in the inner side, on atop of the side wall of the mounting groove, and the horizontal part isfit in the limiting slot.
 4. The backlight module assembly according toclaim 3, wherein the plastic frame is rectangular and has four sidewalls, there are three adjustment sheets which are correspondinglyarranged on three side walls of the plastic frame, and the adjustmentsheet located in the middle abuts against the adjustment sheets locatedon the both sides.
 5. The backlight module assembly according to claim1, wherein the plastic frame is a unitary structure.
 6. The backlightmodule assembly according to claim 1, wherein the adjustment sheet hasabsorbance areas with different absorbance.
 7. A display device,comprising: a backlight module assembly, comprising: a plastic frame,presented in a box shape with an opening on its top, having side wallsand a bottom wall, and wherein a space enclosed by the side walls andthe bottom wall is a mounting groove; a film, arranged on the bottomwall and received within the mounting groove; and an adjustment sheet,arranged on an inner side of the side wall of the mounting groove, -anda display unit arranged on a top end face of the adjustment sheet.
 8. Astructural adjustment method for a backlight module assembly, thebacklight module assembly comprising: a plastic frame, presented in abox shape with an opening on its top, having side walls and a bottomwall, and wherein a space enclosed by the side walls and the bottom wallis a mounting groove; a film, arranged on the bottom wall and receivedwithin the mounting groove; and an adjustment sheet, arranged on aninner side of the side wall of the mounting groove, wherein thestructural adjustment method for the backlight module assemblycomprises: adaptively changing size of the adjustment sheet according tosize adjustment of the film, size adjustment of the second set distance,size adjustment of a display unit, adjustment of the first set distance.9. The structural adjustment method for the backlight module assemblyaccording to claim 8, wherein the adjustment sheet comprising a verticalpart and a horizontal part, a first set distance is provided between thevertical part and the film, and a second set distance is providedbetween an outer end face of the horizontal part and the film, thestructural adjustment method for the backlight module assembly comprisesadaptively changing thickness of the horizontal part of the adjustmentsheet according to thickness adjustment of the film, adjustment of thesecond set distance, or thickness adjustment of the display unit,adaptively changing width of the vertical part of the adjustment sheetaccording to length adjustment of the film, width adjustment of thefilm, adjustment of the first set distance, a length adjustment of thedisplay unit or a width adjustment of the display unit.
 10. Thestructural adjustment method for the backlight module assembly accordingto claim 8, wherein bright areas and dark areas at an edge of thedisplay unit are adjusted by changing absorbance of the absorbance areason the vertical part of the adjustment sheet.
 11. The backlight moduleassembly according to claim 2, wherein the plastic frame is a unitarystructure.
 12. The backlight module assembly according to claim 3,wherein the plastic frame is a unitary structure.
 13. The backlightmodule assembly according to claim 2, wherein the adjustment sheet hasabsorbance areas with different absorbance.
 14. The backlight moduleassembly according to claim 3, wherein the adjustment sheet hasabsorbance areas with different absorbance.
 15. The backlight moduleassembly according to claim 4, wherein the adjustment sheet hasabsorbance areas with different absorbance.
 16. The display deviceaccording to claim 7, wherein the adjustment sheet comprises a verticalpart and a horizontal part, a first set distance is provided between thevertical part and the film, and a second set distance is providedbetween an outer end face of the horizontal part and the film.
 17. Thedisplay device according to claim 16, wherein a limiting slot isprovided in the inner side, on a top of the side wall of the mountinggroove, and the horizontal part is fit in the limiting slot.
 18. Thedisplay device according to claim 17, wherein the plastic frame isrectangular and has four side walls, there are three adjustment sheetswhich are correspondingly arranged on three side walls of the plasticframe, and the adjustment sheet located in the middle abuts against theadjustment sheets located on the both sides.
 19. The display deviceaccording to claim 7, wherein the plastic frame is a unitary structure.20. The display device according to claim 7, wherein the adjustmentsheet has absorbance areas with different absorbance.